Apparatus for drying.



Patented July I I902.

C. J. SELTZEB.

APPARATUS FOR DRYING.

(Application filed Sept. 25, 1901.)

(No Model.)

WITNESSES UQ \Y A TTOR/VEY,

THE Npnms Psrzps CO.,PHOTO-LITHO., WASNINGYON. u. c

a front end elevation.

TATES NITED CYRUS JAY SELTZER, PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR DRYING.

SPECIFICATION forming part of Letters Patent No. 703,746, dated July 1, 1902. Application filed September25, 19'0'1. SrialNm'iGA lfl. (No model.)

To all whom it may concern.-

Be it known that I, CYRUS JAY SELTZER, a citizen of the United States, residing in the city and county of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Drying, 850., of which the following is a full, clear, and exact description, reference being had to the accompanying drawings,of.which Figure 1 is a rear end elevation. Fig. 2 is 7 Fig.3 is asection on line mm, Fig. 1. Fig. 4 is a full section on line 112 Fig. 3. V

The object of this inventionis to provide a simple and efficient apparatus for the drying of fruit, vegetables, or the like, for the vaporization and recovery of liquids that vaporize at a temperature below that of steam, and for other purposes of a similar character.

To this end the leading feature of the invention comprises an external vessel or boiler and a vessel or receptacle contained and supported therein of less diameter or dimensions than the former, whereby a chamber or space is formed between the two vessels for the reception of water to be heated or vaporized, if necessary, the said inner vessel having a door for giving access thereto and also an outlet for carrying off the vapors that may be gener ated from the heat of the water or steam within said chamber.

Other features of the invention relate to means for introducing steam when desired into the said inner vessel or receptacle from the said chamber.

The invention also relates to certain details of construction, all as hereinafter particularly described.

Referring now to the accompanying drawings, which illustrate that form of the invention which up to the present time I find to be preferable, 1 is the outer vessel or boiler, of cylindrical form and made of sufficient strength to withstand any desired steampressure. Within this boiler is a hollow cylinder 2 of less diameter thanthat of the interior of the former and whose ends are open and are tightly secured to and supported by the heads 3 of the boiler, as shown. Thus a closed annular space or chamber 4 intervenes between the boiler and cylinder.

One of the heads of the boiler is cut away on hinges 7, Fig. 2, of the boiler-head. The

space inclosed by the sides of the cylinder, the boiler-head, and the door 6 constitutes a receptacle 8 for the article to be treated in the apparatus, to which access is had by the door 6. In order to carry off the vapors that may be formed within the said receptacle when the apparatus is in use, as. hereinafter described, I provide an outlet or pipe 9. Ialso sometimes provide a bent or U-shaped pipe 10, that leads from the chamber/Unto the receptacle 8, within which pipe is a cock or valve 11, that serves to close or open the same, as may be desired.

12 is a safety-valve of usual construction that communicates with the chamber 4:, and 13 is a glass gage for showing the height of water within the latter.

14 is a steam-gage for indicating the pressure of steam within the boiler-chamber 4.

15 is pipe used in charging the chamber with water, which pipe has a stop-cock (not shown) for opening and closing the same. Beneath the boiler is a means for heating the water within said chamber, said means consisting in the present instance of a gas-stove 16, having a series of jet-pipes 17, and being of wellknown construction requires no particular description- I usually also employ a thermometer (not shown) for ascertaining the temperature within the steam-chamber.

Having described the construction of my apparatus, I shall now describe its mode of operation, as follows: The boiler-that is, the chamber 4eis first charged witha suitable quantity of water through the pipe 15. The article to be treated is then placed by way of the opening 5, normally closed by door 6, in the vessel or receptacle 8, and the door being securely closed the water within chamber 4 is suitably heated or vaporized to the pressure or temperature that may be required for the particular occasion or article. When the proper temperature has been reached, the liquid or liquids contained in the article or substance that has been placed within the receptacle 8 will be driven off as a vapor and pass therefrom by way of the outlet-pipe 9, and if the same be of a character that it is desirableto-recover it the pipe may lead into a suitable condensing apparatus.

In some instances it may be desirable at a certain stage of the operation to introduce more or less steam into the receptacle 8. This may conveniently be done by opening valve 11 in the U-shaped pipe 10, through which pipe the steam will pass from the chamber 4 into said receptacle.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In an apparatus of the class described, the combination with a boiler, of a hollow cylinder arranged therein and of smaller diameter than the boiler, whereby an annular chamber is formed between the boiler and the cylinder, one of the heads of the boiler being provided with an opening through which access may be had to the interior of the cylinder, a door for closing said opening, and a pipe arranged at the exterior of said boiler and leading from the annular chamber to and discharging within the interior of the cylinder, said pipe being provided with a valve for controlling communication between said annular chamber and the interior of said cylinder. v

2. In an apparatus of the class described, the combination with a boiler, of a hollow cylinder arranged therein and of smaller diameter than the boiler, whereby an annular chamber is formed between the boiler and the cylinder, said cylinder being secured to and'supported by the heads of the boiler, one of the heads of the latter being provided with an opening through which access may be had to the interior of the cylinder, a door for closing said opening, and a pipe arranged at the exterior of said boiler. and leading from the annular chamber to and discharging within the interior of the cylinder, said pipe be-' ing provided with a valve for controlling communication between said annular chamber and the interior of said cylinder.

In testimony whereof I have hereunto affixed my signature this 5th day of August, A. D. 1901.

CYRUS J AY SELTZER.

Witnesses:

ANDREW V. GROUPE, WALTER O. PUsEY. 

